websocket bugfix from upstream

web response buffer size (corruption when websockets not used)

432c5837f0

wled00/wled_server.cpp

@@ -225,7 +225,7 @@ void initServer()
       }
     }
     request->send(200, "application/json", F("{\"success\":true}"));
-  });
+  }, JSON_BUFFER_SIZE);
   server.addHandler(handler);
 
   server.on("/version", HTTP_GET, [](AsyncWebServerRequest *request){